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#include "gmxpre.h"

#include "timecontrol.h"

#include "thread_mpi/threads.h"

#include "gromacs/utility/basedefinitions.h"
#include "gromacs/utility/fatalerror.h"
#include "gromacs/utility/real.h"

/* The source code in this file should be thread-safe.
         Please keep it that way. */

/* Globals for trajectory input */
typedef struct
{
    real     t;
    gmx_bool bSet;
} t_timecontrol;

static t_timecontrol timecontrol[TNR] = { { 0, FALSE }, { 0, FALSE }, { 0, FALSE } };

static tMPI_Thread_mutex_t tc_mutex = TMPI_THREAD_MUTEX_INITIALIZER;

gmx_bool bTimeSet(int tcontrol)
{
    gmx_bool ret;

    tMPI_Thread_mutex_lock(&tc_mutex);
    range_check(tcontrol, 0, TNR);
    ret = timecontrol[tcontrol].bSet;
    tMPI_Thread_mutex_unlock(&tc_mutex);

    return ret;
}

real rTimeValue(int tcontrol)
{
    real ret;

    tMPI_Thread_mutex_lock(&tc_mutex);
    range_check(tcontrol, 0, TNR);
    ret = timecontrol[tcontrol].t;
    tMPI_Thread_mutex_unlock(&tc_mutex);
    return ret;
}

void setTimeValue(int tcontrol, real value)
{
    tMPI_Thread_mutex_lock(&tc_mutex);
    range_check(tcontrol, 0, TNR);
    timecontrol[tcontrol].t    = value;
    timecontrol[tcontrol].bSet = TRUE;
    tMPI_Thread_mutex_unlock(&tc_mutex);
}
